char2uni(3x) debian man page | unix.com

char2uni(3x)						   AfterStep X11 window manager 					      char2uni(3x)

NAME
       char2uni - handling on Unicode, UTF-8 and localized 8 bit encodings libAfterImage/CHAR_SIZE

NAMECHAR_SIZE
       -  Convenient  macro  so  we  can  transparently determine the number of bytes that character spans. It assumes UTF-8 encoding when I18N is
       enabled.

SOURCE
	   /* size of the UTF-8 encoded character is based on value of
	    * the first byte : */
	   #define UTF8_CHAR_SIZE(c)   ((((c)&0xC0)==0xC0)? 
					(((c)&0x20)? 
					(((c)&0x10)? 
					(((c)&0x08)? 
					(((c)&0x04)?6:5):4):3):2):1)
	   #ifdef WIN32
	   #define UNICODE_CHAR_SIZE(c)    sizeof(UNICODE_CHAR)
	   #endif
	   #define CHAR_SIZE(c) 	   1

3rd Berkeley Distribution					AfterStep v.2.2.11						      char2uni(3x)